Home / 9,319.95-12,861.18-5,340.69

Finding the Fourth Proportional to 9,319.95, 12,861.18 and 5,340.69

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Solution

The fourth proportional to 9,319.95, 12,861.18 and 5,340.69 is: 7,369.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,319.95 : 12,861.18 = 5,340.69 : x
  2. Step 2: Convert to fraction form
    9,319.95/12,861.18 = 5,340.69/x
  3. Step 3: Cross multiply
    9,319.95x = 12,861.18 × 5,340.69
  4. Step 4: Simplify right side
    9,319.95x = 68,687,575.41
  5. Step 5: Solve for x
    x = 68,687,575.41/9,319.95
  6. Step 6: Final answer
    x = 7,369.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.